Valve.



PATENTED SEPT. 4, 1906.

C. P. TOLMAN.

VALVE.

APPLIOATION FILED NOV. 16. 1905.

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PATENTED SEPTA, 1906. G. P. TOLMAN.

VALVE.

APPLICATION FILED NOV. 16, 1905.

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ATTORNEY.

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No. 830,024. PATENTED SEPT. 4, 1906.

0. P. TOLMAN.

VALVE.

APPLICATION FILED NOV. 16, 1905.

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I -fmwmh ATTORNEY.

UNITED STATES PATENT OFFICE.

CHARLES P. TOLMAN, OF NEW YORK. N. Y., ASSIGNOR TO THE UNION SPECIALTY COMPANY, OF NFJV YORK, N. Y.,

NEWV YORK.

A CORPORATION OF VALVE.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed November 16, 1905. Serial No. 287,562.

To all whom it may concern:

Be it known that 1, CHARLES P. TOLMAN, a citizen of the United States, residing at New York city, in the State of New York, have invented a new and useful Valve, of which the follondng is a specification.

My invention relates to improvements in valves especially adapted to engines of the rotary type, to compressors, and to pumps for exhausting or compressing fluids, having a hollow shaft through which the motive agent or fluid acted upon is supplied and exhausted.

\Vhen a rotary engine is direct connected to a dymamo, it is undesirable to mount the dynamo on the same hollow shaft with the engine and pass either inlet or exhaust steam through that portion of the shaft carrying the dynamo, as the heat from the steam would raise the temperature of the electrical apparatus and interfere with its action. My invention permits this combination to be made by providing inlet and exhaust of the steam from one end of the shaft of the engine, leaving the other end free for coupling or attaching by any other suitable means to the dynamo. My invention also permits the combination of a rotary compressor and a motor, the motor having a solid shaft, which can be coupled direct to one end of the compressor-shaft by providing a means for the admission and discharge of the fluid acted upon from the other end of the compressorshaft. This is equally true when a rotary liquidpump or a pump for producing vacua is substituted for the compressor.

My invent-ion is applicable whenever an. engine, motor, or pump of the type above described is to be connected to a shaft through which the fluid agent cannot or must not or preferably should not be passed or allowed to ass. p In combining two sets of rotary apparatus of the type above described said apparatus can be direct coupled, the inlet and exhaust of the motive agent being provided for by this invention at one end of the engine-shaft and the corresponding functions of the compressor being provided for at one end of the compressor-shaft, said ends being those farthest removed from the coupling device. This will be seen to be equally true if the rotary device, which is coupled to the engine, is a vacuum-pump or a fluid-pump.

With these objects and advantages in view my invention consists in the novel features of construction and combination of parts hereinafter described, and set forth in the claims.

One means for carrying out my invention is shown in the accompanying drawings, in which Figure 1 shows a longitudinal section of the valve in association with the hollow shaft of a rotary engine, rotary compressor, or rotary pump; Fig. 2, a vertical cross-section of the valve on line A B; Fig. 3, a vertical cross-section of the valve on line C D; Fig. 4, a vertical cross-section on line A B, showing the valve adapted to be applied to the compressor or pump, Figs. 1, 2, and 3 showing the valve as providing for admission of motive agent during a fractional part of a stroke in order to secure good economy in operation, and Fig. 4 showing the valve as providing for admission and exhaust of fluid to be acted upon during the full stroke; and Fig. 5, a longitudinal section of a modification of said valve; and Figs. 6 and 7, sections of same on lines A B and O D, respectively.

Similar numerals of reference indicate like parts throughout the figures.

The valve 1 consists of a hollow cylinder closed at one end and divided into two compartments by a partition 19, one compartment 3 preferably serving as the inlet of motive power or liquid and the other compartment 2 serving as the outlet for the same. Said partition 19 (which is shown in the drawings as cylindrical in construction for the sake of economy, it being apparent that any other form of construction will serve the purpose) extends beyond the open end of the outer casing of the valve 18 and through an opening provided for it in exhaust-head 9. Said opening is provided with a packinggland 10 and follower 11 for said gland, said follower carrying on its outer extremity means for connecting a pipe or pipe-fitting or other attachments or connections for transmitting the fluid. Said exhaust-head 9 is also provided with suitable means for connecting passage 2 of the valve to a pipe or pipe-fitting or other passage-way for fluid, and at its inner end it is secured to a support- "with ports 6 in the face of a segmental valveplate 4,-which plate accurately but notrigidly -closes a cavity formed at the inner end of compartment 3. This freedom of motion is-providedin order that both inlet and exhaust valve surfaces under the pressure of the fluid within the cavity can and will conform to'the surfaces upon which they bear. Said ports 15 in the cylinders may also communicate with suitable ports 5 in the valve-casing 18,- which ports lead into the exhaust-compartm'ent 2.

' spectively, partments 3 and 2, formed within said valve- I Another means for carrying out my invention is illustrated in Fig. 5, in which 1 is the main valve-casing, the body of which is cylindrical in form and provided with suitable connections 9 and ll'for communic'ation,=rewith the passage-ways or comcasing 1, said passage-way 3 being provided with ports 6 and passage-way 2 being provided with ports 5. The operation of this valve when fitted in the hollowshaft 17 is identical with that'of the valve shown in Fig. 1.

-'It will be readily seen that the general form -illustrated-in Fig. 5 can beprovided with a cavityin the intake-passage,-said cavity being fitted with a segmental valvelate just as is the case in the valve shown in igs. 1, 2, and 4. It will further be seen that in case of'either of said valves .proper fluidt'ight contact between the valve. surfaces and the opposing surfaces Within the shaft can be *secured by making the valve-casing conical or tapered and a corresponding tapered fit provided for in the hollow shaft, said method of rendering the valve fluid-tight being a matter'of' common practice'in valve construction.

I do not intend to limit myself to the specific construction shown in the drawings, since the same is capable of considerable modification without departing from the principle of my invention.

What I claim, and desire to be secured by Letters Patent, is-

1. A valve for a rotary engine having a hollow shaft, consisting of an outer cylindrical casing, a cylindrical casing within said outer casing, and a compartment or duct formed by each casing in communication with ports in said outer casing and leading to and from the sameend of said hollow shaft.

2. A valve for a rotary engine-provided with a hollow shaft, consisting of an outer cylindrical casing, a cylindrical casing therein, extending through and beyond said outer casing, and compartments formed by said casings in communication with portsin-the outer casing for inlet and exhaust of fluid'to and from the same end of the shaft.

3. A valve for a rotary engine provided with a hollow shaft, consisting of a cylindrical casing having a solid end, a cylindrical casing within said outer casing" extending through and beyond the open end of said outer casing, and compartments within said casings in communication with ports insaid outer casing.

4. A valve for a rotary engine having a hollow'shaft, consisting of a casing fitted into said shaft, an inlet and an outlet compartment formed therein by a longitudinal partition, one of said compartments being'pro vided with a recess into which is fitted a movable valve-plate.

5. A valve for a rotary engineconsisting'of a cylindrical casing closed at one end, a tubular partition dividing said casing into anintake and an exhaust compartment, one end of said partition extending beyond'the open end of said casing and the otherendterminating in a recess provided with a segmental valve-plate.

In witness whereof I hereunto set my hand this 28th day of October, 1905.

CHARLES P. TOLMAN. Witnesses;

F. GLENN, E; M; HULSE. 

